Li Miao, Wu Yue-Jin, Yu Zeng-Liang, Sheng Guo-Ping, Yu Han-Qing
Key Laboratory of Ion Beam Bioengineering, Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China.
Water Res. 2007 Jul;41(14):3152-8. doi: 10.1016/j.watres.2007.04.010. Epub 2007 May 23.
The aim of this study was to investigate the use of water spinach (Ipomoea aquatica Forsk.) with N(+) ion-beam implantation for removal of nutrient species from eutrophic water. The mutated water spinach was grown on floating beds, and growth chambers were used to examine the growth of three cultivars of water spinach with ion implantation for 14 days in simulated eutrophic water at both high and low nitrogen levels. The specific weight growth rates of three cultivars of water spinach with ion implantation were significantly higher than the control, and their NO(3)-N and NH(4)-N removal efficiencies were also greater than those of the control. Furthermore, compared with the control, the nitrogen contents in the plant biomass with ion implantation were higher as well.
本研究的目的是调查经N(+)离子束注入的空心菜（蕹菜）对富营养化水体中营养物质的去除效果。将诱变后的空心菜种植在漂浮床上，利用生长室在高氮和低氮水平的模拟富营养化水体中，对三个经离子注入的空心菜品种进行14天的生长研究。三个经离子注入的空心菜品种的比重增长率显著高于对照品种，其对NO(3)-N和NH(4)-N的去除效率也高于对照品种。此外，与对照相比，经离子注入的植物生物量中的氮含量也更高。
